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(11)

EP 1 268 641 A1

(12)

(43) Date of publication: 02.01.2003 Bulletin 2003/01 (21) Application number: 01942652.7 (22) Date of filing: 16.01.2001

(51) International Patent Classification (IPC)7: C08K 5/09, B29C 51/00 (86) International application number: PCT/US0101/454 (87) International publication number: WO 0105/3404 (26.07.2001 Gazette 2001/30)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 20.01.2000 US 488465 (71) Applicant: Aristech Chemical Corporation Philadelphia, PA 19103 (US)	(72) Inventor: ROBERTS, Timothy, N. Gibsonia, PA 15044 (US) (74) Representative: Hertz, Oliver, Dr. et al v. Bezold & Sozien,Akademiestrasse 7 80799 München 80799 München (DE)